//
//  YanVisitorView.swift
//  SinaWeibo
//
//  Created by mac on 2017/4/18.
//  Copyright © 2017年 mac. All rights reserved.
//

import UIKit

class YanVisitorView: UIView {
    
    // 注册按钮
    lazy var registerButton: UIButton = UIButton.cz_textButton("注册",
                                                               fontSize: 16,
                                                               normalColor: UIColor.orange,
                                                               highlightedColor: UIColor.black,
                                                               backgroundImageName: "common_button_white_disable")
    // 登录按钮
    lazy var loginButton: UIButton = UIButton.cz_textButton("登录",
                                                            fontSize: 16,
                                                            normalColor: UIColor.darkGray,
                                                            highlightedColor: UIColor.black,
                                                            backgroundImageName: "common_button_white_disable")
    
    /// 访客试图的信息字典
    var visitorInfo: [String: String]? {
        didSet {
            // 1> 去字典信息
            guard let imageName = visitorInfo?["imageName"], let message = visitorInfo?["message"] else {
                return
            }
            
            // 2> 设置消息
            tipLabel.text = message
            
            // 3> 设置图像，首页不需要设置
            if imageName == "" {
                startAnimation()
                
                return
            }
            
            iconView.image = UIImage(named: imageName)
            
            // 其他控制器
            houseIconView.isHidden = true
            maskIconView.isHidden = true
        }
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
    fileprivate func startAnimation() {
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        
        anim.toValue = 2 * M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 15
        // 动画完成不删除。如果iconview被释放，动画会一起销毁
        anim.isRemovedOnCompletion = false
        
        iconView.layer.add(anim, forKey: nil)
        
    }
    
    // MARK: - 私有控件
    /// 懒加载属性只有调用 UIKit 控件的指定构造函数，其他都需要使用类型
    /// 图像试图
    fileprivate lazy var iconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    fileprivate lazy var maskIconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    // 小房子
    fileprivate lazy var houseIconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    // 提示标签
    fileprivate lazy var tipLabel: UILabel = UILabel.cz_label(withText: "关注一些人，回这里看看有什么惊喜", fontSize: 14, color: UIColor.darkGray)
    
   
    
}

extension YanVisitorView {
    func setupUI() {
        backgroundColor = UIColor.cz_color(withHex: 0xEDEDED)
        
        // 添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(houseIconView)
        addSubview(tipLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        // 文本居中
        tipLabel.textAlignment = .center
        
        // 取消autoresizing
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        // 自动布局
        let margin : CGFloat = 20.0
        
        
        // 1.图像试图
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: 0))
        
        // 2.小房子
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: 0))
        
        // 3.提示标签
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 236))
        
        // 4.注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .left,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .left,
                                         multiplier: 1.0,
                                         constant: 0))
        
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 100))
        
        // 5.登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .right,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .right,
                                         multiplier: 1.0,
                                         constant: 0))
        
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: registerButton,
                                         attribute: .width,
                                         multiplier: 1.0,
                                         constant: 0))
        
        // 6.遮罩图像
        // views:定义VFL中的控件名称和实际名称映射关系
        // metrics: 定义VFL中（ ）指定的常数映射关系
        let viewDict = ["maskIconView": maskIconView,
                        "registerButton": registerButton] as [String : Any]
        let metrics = ["spacing": -20]
        
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "H:|-0-[maskIconView]-0-|",
            options: [],
            metrics: nil,
            views: viewDict))
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "V:|-0-[maskIconView]-spacing-[registerButton]",
            options: [],
            metrics: metrics,
            views: viewDict))
    }
}
